Books like Viking
Susan M. Margeson, DK Publishing, Philip Steele, Ragnhild Ljosland
Viking is 72 pages, about 1 hour 19 minutes at 250 words a minute.
6 books to read next
How long each takes
Leif the Lucky 1.1 h 
How to Betray a Dragon's Hero 7.6 h 
The Viking Adventure 2.2 h 
You Wouldn't Want to Be a Viking Explorer! 35 min 
Guts & Glory 6.2 h 
The Saga of Erik the Viking 2.6 h Bar height shows length. Estimated at 250 words a minute.